一、引言在最近的十年,一种新概念—最佳自适应系统(OAS)—已在天线处理技术中发展起来。这一概念适用于用 N 基元阵检测非平稳噪声场中的点源信号。利用达种方法可通过一个 N基元阵把掩埋在非平稳噪声场中从点源发出的信号检测出来。根据 Mermoz 所发展的理论,采用最大信噪比准则所得的基本方块图如下所示: I. INTRODUCTION In the recent decade, a new concept, Optimal Adaptive System (OAS), has been developed in antenna processing technology. This concept applies to detecting point source signals in nonstationary noise fields using N-primitive arrays. By using this method, a signal from a point source buried in a non-stationary noise field can be detected by an N-element array. According to the theory developed by Mermoz, the basic block diagram using the maximum SNR criterion is as follows: